Perceptual reference signal configuration method and device and communication node

Abstract

The embodiment of the invention discloses a perception reference signal configuration method, a perception reference signal configuration device and a communication node. The method comprises the following steps: a first node sends a first reference signal to a second node by using a plurality of first beams, and receives a first measurement result obtained by measuring the first reference signal by the second node; and determining a second beam based on the two adjacent first beams when determining that the reference signal receiving powers of the two adjacent first beams meet a first condition based on the first measurement result, and sending a second reference signal by using the second beam, and receiving a second measurement result obtained by measuring the second reference signal by the second node.

Description

Technical Field

[0001] This invention relates to the field of communication technology, and more specifically to a method, apparatus, and communication node for configuring a sensing reference signal. Background Technology

[0002] In existing communication systems, base stations are configured with several reference signals and corresponding time-frequency resources, and are transmitted through corresponding beams; the terminal measures each reference signal and reports the reception quality of the reference signals to the base station; the base station uses this information to determine the optimal beam direction.

[0003] When the sensing system uses the same reference signal configuration scheme as the communication system, due to the limitation of the number of beams, there will be a high probability that there will be no suitable beam to be aligned with the target. In this case, the echo signal of the sensing signal sent by the transmitting node after being reflected by the target object will be very weak and may result in inaccurate sensing. Summary of the Invention

[0004] To address the existing technical problems, embodiments of the present invention provide a method, apparatus, and communication node for configuring a sensing reference signal.

[0005] To achieve the above objectives, the technical solution of this invention is implemented as follows:

[0006] In a first aspect, embodiments of the present invention provide a method for configuring a sensing reference signal, the method being applied to a first node, the method comprising:

[0007] The first node transmits a first reference signal to the second node using multiple first beams, and receives a first measurement result from the second node measuring the first reference signal;

[0008] Based on the first measurement result, when the first node determines that there are two adjacent first beams whose reference signal reception power satisfies the first condition, it determines a second beam based on the two adjacent first beams, transmits a second reference signal using the second beam, and receives a second measurement result from the second node measuring the second reference signal.

[0009] In the above scheme, before the first node transmits the first reference signal to the second node using multiple first beams, the method further includes:

[0010] The first node sends the first configuration information of the first reference signal to the second node. The first configuration information includes: time domain resource configuration information, frequency domain resource configuration information, measurement reporting type, and the number of reported measurement results.

[0011] In the above scheme, the first configuration information also includes measurement requirement indication information;

[0012] The measurement requirement indication information includes: a first threshold value and indication information on whether the difference between the reference signal received power of the two beams is less than the first threshold value; wherein, the two beams are the two beams whose corresponding reference signal received power is ranked from largest to smallest.

[0013] In the above scheme, the first condition includes: there are two first beams whose corresponding reference signal received power is ranked from largest to smallest and are adjacent beams, and the difference between the reference signal received power of the two first beams is less than a first threshold value.

[0014] In the above scheme, before transmitting the second reference signal using the second beam, the method further includes: the first node transmitting second configuration information of the second reference signal to the second node, the second configuration information including: time domain resource configuration information, frequency domain resource configuration information, measurement reporting type, number of reported measurement results, and indication information of quasi-co-location type D; the indication information of quasi-co-location type D is used to indicate that the resources of the second reference signal have a quasi-co-location relationship with the resource with the highest reference signal received power in the first measurement results.

[0015] In the above scheme, determining the second beam based on the two adjacent first beams includes:

[0016] Increase the oversampling factor of the first and second dimensions in beamforming to increase beam density or reduce the angular spacing between beams;

[0017] Based on the two adjacent first beams, the beam that satisfies the specified range among the multiple beams after the density is increased or the angular interval is reduced is determined as the second beam.

[0018] In the above scheme, the method further includes: the first node determining the beam direction for performing the sensing task based on the first measurement result and the second measurement result.

[0019] Secondly, embodiments of the present invention also provide a method for configuring a sensing reference signal, the method being applied to a second node, the method comprising:

[0020] The second node receives a first reference signal transmitted by the first node using multiple first beams, and sends a first measurement result to the first node measuring the first reference signal;

[0021] The second node receives a second reference signal transmitted by the first node using a second beam, and sends a second measurement result of measuring the second reference signal to the first node; the second beam is determined by the first node based on the first measurement result.

[0022] In the above scheme, before the second node receives the first reference signal transmitted by the first node using multiple first beams, the method further includes: the second node receiving first configuration information transmitted by the first node, the first configuration information including: time domain resources, frequency domain resources, measurement reporting type, and the number of reported measurement results.

[0023] In the above scheme, the first configuration information also includes measurement requirement indication information;

[0024] The measurement requirement indication information includes: a first threshold value and an indication information on whether the difference between the reference signal received power of the two beams is less than the first threshold value; wherein, the two beams are the two beams whose corresponding reference signal received power is ranked from largest to smallest.

[0025] Accordingly, when the measurement requirement indication information includes indication information on whether the difference between the reference signal received power of the two beams is less than the first threshold value, the first measurement result includes first information indicating whether the difference between the reference signal received power of the two beams is less than the first threshold value.

[0026] In the above scheme, before the second node receives the second reference signal transmitted by the first node using the second beam, the method further includes: the second node receiving second configuration information of the second reference signal transmitted by the first node, the second configuration information including: time domain resources, frequency domain resources, measurement reporting type, number of reported measurement results, and indication information of quasi-co-location type D; the indication information of quasi-co-location type D is used to indicate that the resources of the second reference signal have a quasi-co-location relationship with the resource with the highest reference signal reception power in the first measurement results.

[0027] In the above scheme, the second node receiving the second reference signal transmitted by the first node using the second beam includes: the second node receiving the second reference signal transmitted by the first node using the receiving beam when the reference signal receiving power is at its maximum in the first measurement result.

[0028] Thirdly, embodiments of the present invention also provide a sensing reference signal configuration device, the device being applied to a first node, the device comprising: a first communication unit and a first processing unit; wherein...

[0029] The first communication unit is configured to transmit a first reference signal to the second node using multiple first beams, and to receive a first measurement result from the second node measuring the first reference signal.

[0030] The first processing unit is configured to determine a second beam based on the two adjacent first beams when the reference signal received power of two adjacent first beams satisfies a first condition, based on the first measurement result.

[0031] The first communication unit is further configured to transmit a second reference signal using the second beam, and to receive a second measurement result from the second node measuring the second reference signal.

[0032] Fourthly, embodiments of the present invention also provide a sensing reference signal configuration device, the device being applied to a second node, the device comprising: a second communication unit and a second processing unit; wherein,

[0033] The second communication unit is configured to receive a first reference signal transmitted by the first node using a plurality of first beams; and is also configured to receive a second reference signal transmitted by the first node using a second beam, wherein the second beam is determined by the first node based on the first measurement result;

[0034] The second processing unit is configured to measure the first reference signal to obtain a first measurement result; and to measure the second reference signal to obtain a second measurement result.

[0035] The second communication unit is further configured to send the first measurement result to the first node; and to send the second measurement result to the first node.

[0036] Fifthly, embodiments of the present invention also provide a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the sensing reference signal configuration method described in the first or second aspect of the present invention.

[0037] In a sixth aspect, embodiments of the present invention also provide a communication node, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps of the sensing reference signal configuration method described in the first or second aspect of the present invention.

[0038] In a seventh aspect, embodiments of the present invention also provide a computer program product, including computer program instructions that cause a computer to perform the steps of the sensing reference signal configuration method described in the first or second aspect of the present invention.

[0039] The present invention provides a sensing reference signal configuration method, apparatus, and communication node. The method includes: a first node transmitting a first reference signal to a second node using multiple first beams, and receiving a first measurement result from the second node measuring the first reference signal; based on the first measurement result, when it is determined that the reference signal receiving power of two adjacent first beams satisfies a first condition, a second beam is determined based on the two adjacent first beams, a second reference signal is transmitted using the second beam, and a second measurement result from the second node measuring the second reference signal is received. By employing the technical solution of the present invention, when the first measurement result of the first round of first reference signals determines that the reference signal receiving power of two adjacent first beams satisfies a first condition, the beam is adjusted, and the adjusted beam is used to transmit the second round of reference signals and receive the corresponding second measurement result. This enables the adjusted beam to be more accurately aligned with the detection target, thereby improving the sensing performance of the receiving end. Attached Figure Description

[0040] Figure 1 A schematic diagram of the beam;

[0041] Figure 2 This is a flowchart illustrating the sensing reference signal configuration method according to an embodiment of the present invention. Figure 1 ;

[0042] Figure 3 This is a schematic diagram of the beam direction of the first beam in the sensing reference signal configuration method of this invention.

[0043] Figure 4 This is a schematic diagram of the transmission of the first reference signal in the sensing reference signal configuration method of this invention.

[0044] Figures 5a to 5c These are schematic diagrams of two beams that meet the conditions in the sensing reference signal configuration method of this invention.

[0045] Figures 6a to 6c These are schematic diagrams of the second beam in the sensing reference signal configuration method according to an embodiment of the present invention;

[0046] Figure 7 This is a schematic diagram of the transmission of the second reference signal in the sensing reference signal configuration method of this invention.

[0047] Figure 8 This is a flowchart illustrating the sensing reference signal configuration method according to an embodiment of the present invention. Figure 2 ;

[0048] Figure 9 This is a schematic diagram of the interaction flow of the sensing reference signal configuration method according to an embodiment of the present invention;

[0049] Figure 10 This is a schematic diagram of the composition of the sensing reference signal configuration device according to an embodiment of the present invention. Figure 1 ;

[0050] Figure 11 This is a schematic diagram of the composition of the sensing reference signal configuration device according to an embodiment of the present invention. Figure 2 ;

[0051] Figure 12 This is a schematic diagram of the hardware structure of a communication node according to an embodiment of the present invention. Detailed Implementation

[0052] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0053] The technical solutions of this invention can be applied to various communication systems, such as GSM (Global System for Mobile communication), LTE (Long Term Evolution), or 5G systems. Optionally, a 5G system or 5G network can also be called a New Radio (NR) system or NR network. With the development of communication technology, the technical solutions of this invention can also be applied to future communication systems, such as 6G systems or 6G networks; this embodiment does not limit this application.

[0054] For example, the communication system used in this embodiment of the invention may include network devices and terminal devices (also referred to as terminals, communication terminals, etc.); the network device may be a device that communicates with the terminal device. The network device can provide communication coverage within a certain area and can communicate with terminals located within that area. Optionally, the network device may be a base station in various communication systems, such as an evolved Node B (eNB) in an LTE system, or a gNB in ​​a 5G or NR system.

[0055] It should be understood that devices with communication functions in the network / system of this application embodiment can be referred to as communication devices. Communication devices may include network devices and terminals with communication functions. Network devices and terminal devices can be the specific devices described above, which will not be repeated here. Communication devices may also include other devices in the communication system, such as network controllers, mobility management entities, and other network entities. This embodiment of the present invention does not limit these.

[0056] It should be understood that the terms "system" and "network" are often used interchangeably in this document. The term "and / or" in this document merely describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Furthermore, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0057] The terms “first,” “second,” etc., used in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0058] Before providing a detailed description of the technical solutions of the embodiments of the present invention, a brief introduction to the prior art involved in the embodiments of the present invention will be given first.

[0059] Communication-sensing integration is one of the key technologies of sixth-generation mobile communication systems. As a new type of integrated technology, communication-sensing integration aims to share the same set of hardware, software, and spectrum resources to achieve communication and sensing functions, further improving spectrum and resource utilization. Utilizing communication / sensing signals for sensing can support new services such as target detection, high-precision positioning, environmental reconstruction, and imaging, and can be widely applied in application scenarios such as drones, smart vehicles, and the Internet of Things, contributing to the interconnection of everything.

[0060] The working modes of a sensing system can be divided into two main categories: independent sensing and collaborative sensing. Independent sensing is self-transmitting and self-receiving, meaning that node A sends a sensing signal, and the echo signal reflected by the target object returns to node A for reception. Sensing the target is achieved through this self-transmission and self-reception. Collaborative sensing is an A-transmitting, B-receiving mode, where node A sends a sensing signal, and one or more other collaborating nodes B receive the signal. Sensing the target is achieved through joint signal processing.

[0061] Since the echo signal of the sensing signal sent by the transmitting node is weak after being reflected by the target object and reaching the receiving node, and is even weaker than other clutter signals or interference, the sensing system can enhance the transmission and reception of the sensing reference signal through multi-antenna beamforming technology. When the beam is well aligned with the target, a high beamforming gain can be obtained, thereby enabling better detection of the target.

[0062] In current communication systems, the reference signals used for measurement mainly include: synchronization signal and physical broadcast channel (PBCH) block (SSB), channel status information-reference signal (CSI-RS), positioning reference signal (PRS), and sounding reference signal (SRS). The sensing reference signals used in sensing systems can typically employ existing communication system reference signal sequences, but the time and frequency resources they occupy need to be specifically configured and communicated to the receiving node.

[0063] For example, the method by which a base station configures reference signals for a terminal is usually to pre-configure multiple possible time-frequency resource configurations for the terminal and then activate one or more of these time-frequency resource configurations.

[0064] When a base station transmits a reference signal, in addition to configuring appropriate time and frequency resources, it can also utilize spatial resources, such as using multi-antenna beamforming technology, to improve signal gain in a specific direction.

[0065] Generally, beamforming can be divided into two schemes: analog beamforming and digital beamforming. Analog beamforming completes the beamforming process at the RF front end. A set of phase shifters controls the phase of each antenna element connected to a single RF channel, allowing electromagnetic waves in a specific direction to coherently superimpose and form a high-gain beam. Digital beamforming, on the other hand, forms the beam during digital baseband processing. It optimizes link performance by independently controlling the phase and amplitude of the signals processed by each RF channel.

[0066] For channel quality measurements, such as Reference Signal Receiving Power (RSRP) measurements, they are generally based on single-port measurements. In this case, simulated beamforming is usually performed on the physical transceiver unit corresponding to that port.

[0067] Figure 1 A schematic diagram of the beam; as shown Figure 1 As shown, due to the high directivity of beamforming, meaning that the spatial coverage of a single beam is very small, the transmitter needs to design multiple beams to cover the entire spatial range as much as possible; the more beams, the better the spatial coverage. On the other hand, since each beam needs to be configured with corresponding reference signal time-frequency resources and notified to the terminal for corresponding measurements, the more beams there are, the more reference signal resources need to be configured, resulting in a large amount of reference signal resource overhead and signaling overhead. At the same time, the more beams there are, the higher the complexity of the terminal's measurements. Therefore, in practical systems, a compromise is made between these two factors, configuring an appropriate number of reference signal resources and corresponding beams.

[0068] This invention provides a method for configuring a sensing reference signal. Figure 2 This is a flowchart illustrating the sensing reference signal configuration method according to an embodiment of the present invention. Figure 1 ;like Figure 2 As shown, the method includes:

[0069] Step 101: The first node sends a first reference signal to the second node using multiple first beams, and receives a first measurement result from the second node measuring the first reference signal;

[0070] Step 102: Based on the first measurement result, when the first node determines that there are two adjacent first beams whose reference signal receiving power satisfies the first condition, it determines a second beam based on the two adjacent first beams, transmits a second reference signal using the second beam, and receives a second measurement result from the second node measuring the second reference signal.

[0071] In this embodiment, the first node, as a transmitter, can also be referred to as a transmitter node or transmitter device; correspondingly, the second node, as a receiver, can also be referred to as a receiver node or receiver device. For example, the first node can be a base station, and can be referred to as the first base station; the second node can be a base station or a terminal, and when the second node is a base station, it can be referred to as the second base station.

[0072] In this embodiment, the first node first sends a first reference signal to the second node using multiple first beams; the second node measures the first reference signal, obtains a first measurement result, and sends the first measurement result to the first node.

[0073] In some alternative embodiments, the first reference signal may be a reference signal such as SSB, CSI-RS, PRS, or it may be a reference signal specifically used for sensing services. This embodiment does not limit this.

[0074] In some alternative embodiments, the second node measures the first reference signal, specifically by measuring RSRP and / or the signal-to-interference-plus-noise ratio (SINR).

[0075] In some optional embodiments of the present invention, before the first node sends a first reference signal to the second node using multiple first beams, the method further includes: the first node sending first configuration information of the first reference signal to the second node, the first configuration information including: time domain resource configuration information, frequency domain resource configuration information, measurement reporting type, and the number of reported measurement results.

[0076] In this embodiment, before the first node sends the first reference signal to the second node, it first sends the first configuration information of the first reference signal to the second node. The first configuration information is used at least for the second node to receive the first reference signal and / or to measure the first reference signal.

[0077] In this embodiment, optionally, the first configuration information may include time-frequency resource configuration information of the first reference signal, such as time-domain resource configuration information and / or frequency-domain resource configuration information. Optionally, the first configuration information may also include measurement reporting type and / or the number of reported measurement results. For example, the measurement reporting type may include RSRP and / or SINR. Taking RSRP as an example, during the second node's measurement of the first reference signal, the first reference signal with the highest RSRP value (ranked from largest to smallest) is selected for reporting based on the number of measurement results; the value of K is then the number of measurement results. For example, if the first reference signal has 16 resources, corresponding to 16 beams, the second node measures these 16 resources, but the number of reported measurement results is less than or equal to the number of resources corresponding to the first reference signal. For example, the value of K can be 4, or other integers less than or equal to 16.

[0078] In some optional embodiments, one or more of the time-domain resource configuration information, frequency-domain resource configuration information, measurement reporting type, and number of reported measurement results can also be made known to the second node through a pre-agreed method, that is, one or more of the time-domain resource configuration information, frequency-domain resource configuration information, measurement reporting type, and number of reported measurement results do not need to be configured through the first configuration information.

[0079] In some optional embodiments, when the second node is a terminal, the first node sends first configuration information to the second node, including: the first node sending the first configuration information to the second node via Radio Resource Control (RRC), Downlink Control Information (DCI), or MAC CE. Correspondingly, the first node receives a first measurement result from the second node measuring the first reference signal, including: the first node receiving the first measurement result sent by the second node via Physical Uplink Control Channel (PUCCH) signaling or Physical Uplink Shared Channel (PUSCH).

[0080] In some alternative embodiments, when the second node is a second base station, the first node sends first configuration information to the second node. Specifically, the first node may send the first configuration information to the second node via Xn interface signaling. Correspondingly, the first node receives a first measurement result from the second node's measurement of the first reference signal. Specifically, the first node may receive the first measurement result sent by the second node via Xn interface signaling.

[0081] In some optional embodiments, the first configuration information further includes measurement requirement indication information; wherein, the measurement requirement indication information includes: a first threshold value and indication information on whether to feedback whether the difference in the reference signal received power of the two beams is less than the first threshold value; wherein, the two beams are the two beams whose corresponding reference signal received power is ranked from largest to smallest.

[0082] In this embodiment, the first configuration information may further include measurement requirement indication information. This indication information includes whether to provide feedback on whether the difference in the received reference signal power of the two beams is less than a first threshold value, and the first threshold value itself. If the measurement requirement indication information includes the indication of whether the difference in the received reference signal power of the two beams is less than the first threshold value, the first measurement result also needs to include whether the difference in the RSRP of the two beams ranked from largest to smallest is less than the first threshold value. Correspondingly, if the measurement requirement indication information does not include the indication of whether the difference in the received reference signal power of the two beams is less than the first threshold value, the first measurement result does not need to include whether the difference in the RSRP of the two beams ranked from largest to smallest is less than the first threshold value.

[0083] In conventional technical solutions, among the K RSRPs that the base station needs to report, the top-1 RSRPs are reported within the range of -140dBm to -44dBm, with a step size of 1dBm, i.e., an accuracy of ±0.5dB. The remaining K-1 reports correspond to K-1 differential RSRPs, representing the difference from the top-1 RSRP, with a step size of 2dBm, i.e., an accuracy of ±1dB. However, in this embodiment, the first threshold value has relatively high accuracy, for example, a step size of 0.5dBm, i.e., an accuracy of ±0.25dB.

[0084] Figure 3 This is a schematic diagram of the beam direction of the first beam in the sensing reference signal configuration method of this invention; see reference. Figure 3 As shown, each first beam is determined by the elevation and azimuth angles. Simulated beamforming controls the phase of each antenna element on a radio frequency channel through a set of phase shifters, allowing electromagnetic waves in a specific spatial direction to coherently superimpose and form a high-gain beam. In other words, each first beam is achieved by controlling the phase of each antenna element.

[0085] Generally, the phase shifter controls the phase of each antenna element by designing it according to the method of generating a Discrete Fourier Transform (DFT) beamcodebook. That is, the phase of each antenna element controlled by the phase shifter is similar to the phase in the DFT transform, with each antenna element having a phase of 2π(k·m / M + l·n / N). Here, (k,l) is the beam index, representing the beam in the k-th row and l-th column, and (m,n) is the antenna element index, representing the antenna element in the m-th row and n-th column. M and N are the number of antenna elements in the vertical and horizontal directions, respectively. In this case, the phase difference between adjacent antenna elements in the vertical direction is 2πk / M, and the phase difference between adjacent antenna elements in the horizontal direction is 2πl / N. Therefore, by designing different (k,l) values, different beam directions can be obtained.

[0086] In the beam set {(k,l)} obtained by formula 2π(k·m / M+l·n / N), the spacing between adjacent beams may be large. In order to control the spacing between adjacent beams more precisely, an oversampling factor O is generally introduced in both the vertical and horizontal dimensions. v and O H At this point, the phase of each antenna element is 2π [k·m / (M·O)]. v )+l·n / (N·O H )).

[0087] In this embodiment, the first node configures multiple first reference signals through first configuration information, and each sensing signal is transmitted using a first beam.

[0088] Figure 4 This is a schematic diagram illustrating the transmission of the first reference signal in the sensing reference signal configuration method of this invention; as shown. Figure 4 As shown, the first node transmits four first reference signals using a first beam (such as beam 1, beam 2, beam 3, and beam 4), and the measurement requirement indication information configured through the first configuration information includes an indication of whether the difference in received power of the reference signals from two beams is less than a first threshold value (e.g., 1.5 dB). The first reference signals sense the arrival of the echo signal at the second node by detecting the reflection / diffraction of the target. The second node performs RSRP measurement on the four first reference signals and feeds back the first measurement result to the first node. For example, the first measurement result includes the first two beams (beam 2 and beam 3) whose RSRP is from largest to smallest, and the difference in RSRP is less than the first threshold value (1.5 dB).

[0089] In some optional embodiments, the first condition includes: there are two first beams whose corresponding reference signal received power is ranked in descending order and are adjacent beams, and the difference in reference signal received power between the two first beams is less than a first threshold value.

[0090] In this embodiment, the first node determines the RSRP corresponding to each first reference signal based on the first measurement result reported by the second node; and then determines the first reference signal whose RSRP is ranked first two from high to low. If the first configuration information includes measurement requirement indication information, and the measurement requirement indication information includes indication information on whether the difference in the received power of the reference signals of the two feedback beams is less than the first threshold value, then the first measurement result includes whether the difference in RSRP of the two beams ranked first from high to low is less than the first threshold value. Since the reference signal (first reference signal) is associated with the beam, for example, before transmitting the first reference signal using multiple first beams, the first node determines the first beam corresponding to each first reference signal; then after receiving the first measurement result, it can determine the first beam corresponding to the first reference signal whose RSRP is ranked first two from high to low according to this correspondence. If the two first beams corresponding to the first reference signals whose RSRP is ranked first two from high to low are adjacent, and the difference in RSRP of the two first beams is less than the first threshold value, then it is determined that there are two adjacent first beams whose RSRP satisfies the first condition.

[0091] In this embodiment, if the first node determines, based on the first measurement result, that there are two adjacent first beams whose reference signal received power satisfies the first condition, that is, the two beams with the strongest RSRP are adjacent and their RSRP values ​​are very close, it indicates that the direction of the target is likely between these two beams. Therefore, it is necessary to subsequently determine the second beam. The second beam is then used to transmit the second reference signal and obtain the second measurement result.

[0092] Figures 5a to 5c These are schematic diagrams of two beams satisfying the conditions in the sensing reference signal configuration method of this invention; Figures 5a to 5c In the diagram, each gray circle represents the first beam.

[0093] like Figure 5a The diagram shows the two strongest beams of RSRP horizontally adjacent to each other. The black circles in the diagram represent the directions of the two strongest beams of RSRP. At this time, the direction of the target being detected is very likely to be in the middle of the horizontal direction of these two beams, that is, the position of the circle filled with lines.

[0094] like Figure 5b The diagram shows the two strongest first beams of RSRP perpendicularly adjacent to each other. The black circles in the diagram represent the directions of the two strongest beams of RSRP. At this time, the direction of the target being detected is very likely to be in the middle of the perpendicular direction of these two beams, that is, the position of the circle filled with lines.

[0095] like Figure 5c The diagram shows the two strongest first beams of RSRP diagonally adjacent to each other. The black circles in the diagram represent the directions of the two strongest beams of RSRP. At this time, the direction of the target being detected is very likely to be in the middle of the diagonal directions of these two beams, that is, the position of the circle filled with lines.

[0096] In this embodiment, the first node determines the second beam using the two adjacent beams, that is, it determines the second beam using the two adjacent beams with the strongest RSRP and whose RSRP difference is less than the first threshold value. Optionally, the number of the second beams can also be multiple, but less than the number of the first beams.

[0097] In some alternative embodiments, determining the second beam based on the two adjacent first beams includes: increasing the oversampling factor of the first and second dimensions in beamforming to increase the beam density or reduce the angular spacing between beams; and determining the beam that satisfies a specified range among the multiple beams after the density is increased or the angular spacing is reduced, based on the two adjacent first beams, as the second beam.

[0098] In this embodiment, as described above, simulated beamforming controls the phase of each antenna element on a radio frequency channel through a set of phase shifters, enabling electromagnetic waves in a specific spatial direction to coherently superimpose and form a high-gain beam. In this embodiment, to obtain a more precise direction for the target, the first node employs beamforming by expanding the oversampling factor O in the first and second dimensions. v and O HThis can be achieved by increasing the beam density or reducing the angular spacing between beams, i.e., thinning the beam. For example, the adjusted beam density can be X times the original beam density, or the adjusted angular spacing can be 1 / X of the original angular spacing; where X is a positive integer greater than or equal to 2. Thus, by thinning the beam, a second beam is determined, and using this second beam to transmit a second reference signal and receive a second measurement result, a more accurate optimal beam direction for the RSRP can be obtained based on the first and second measurement results.

[0099] In this embodiment, the first node, based on the two adjacent first beams, determines the beam that satisfies a specified range from multiple beams after the density increases or the angular spacing decreases as the second beam; wherein, the specified range is specifically a specified range related to the two adjacent first beams. For example, satisfying the specified range may specifically be a specified range between the two adjacent first beams. In practical applications, corresponding specified ranges can be configured for different types of the two adjacent first beams; wherein, the different types of the two adjacent first beams are, for example... Figures 5a to 5c The three types shown are (horizontally adjacent, vertically adjacent, and diagonally adjacent).

[0100] Figures 6a to 6c These are schematic diagrams of the second beam in the sensing reference signal configuration method according to an embodiment of the present invention; Figures 6a to 6c In the diagram, each gray circle represents the first beam, and the circles in the rows and columns containing the white circles represent additional beams added as the beam density increases.

[0101] like Figure 6a As shown, assuming the two strongest first beams of RSRP are horizontally adjacent, they are represented by black circles, corresponding to beam numbers (k,l) and (k,l+1) respectively. For beam (k,l), the phase of each antenna element is 2π[k·m / (M·O]]. v )+l·n / (N·O H )], m=0,1,...,M-1;n=0,1,...,N-1;For beam (k,l+1), the phase of each antenna element is 2π[k·m / (M·O v )+(l+1)·n / (N·O H At this point, the second reference signal can be configured with 7 reference signal resources, and transmitted using the second beam represented by the 7 lines filled in the figure.

[0102] Here, by increasing the oversampling factor O v and O H This is used to refine the beam direction. For example, refining both the horizontal and vertical directions to twice the beam size corresponds to an oversampling factor of O. v and OH Each is increased to twice its original value. At this point, the phase of each antenna element with the original beam number (k,l) is 2π[2k·m / (M·2O]]. v )+2l·n / (N·2O H The phase of each antenna element in the original beam number (k, l+1) is 2π[2k·m / (M·2O]]. v )+(2l+2)·n / (N·2O H The phase of each antenna element of the second beam corresponding to the 7 lines-filled circles is 2π[(2k-1)·m / (M·2O)]. v )+2l·n / (N·2O H )]、2π[(2k-1)·m / (M·2O v )+(2l+1)·n / (N·2O H )]、2π[(2k-1)·m / (M·2O v )+(2l+2)·n / (N·2O H )]、2π[2k·m / (M·2O v )+(2l+1)·n / (N·2O H )]、2π[(2k+1)·m / (M·2O v )+2l·n / (N·2O H )]、2π[(2k+1)·m / (M·2O v )+(2l+1)·n / (N·2O H )]、2π[(2k+1)·m / (M·2O v )+(2l+2)·n / (N·2O H )).

[0103] like Figure 6b As shown, assuming the two strongest first beams of RSRP are perpendicularly adjacent, they are represented by black circles, corresponding to beam numbers (k,l) and (k+1,l) respectively. For beam (k,l), the phase of each antenna element is 2π[k·m / (M·O]]. v )+l·n / (N·O H )], m=0,1,...,M-1;n=0,1,...,N-1;For beam (k+1,l), the phase of each antenna element is 2π[(k+1)·m / (M·O v )+l·n / (N·O H At this point, the second reference signal can be configured with seven reference signal resources, for example, by transmitting using the second beam represented by the seven lines filled in the diagram. Here, the phase of each antenna element of the second beam corresponding to the seven lines filled in the diagram is... Figure 6a The situation shown is similar and will not be repeated here.

[0104] like Figure 6c As shown, assuming the two strongest first beams of RSRP are diagonally adjacent, indicated by black circles, corresponding to beam numbers (k, l) and (k+1, l+1) respectively. For beam (k, l), the phase of each antenna element is 2π[k·m / (M·O]]. v )+l·n / (N·O H )], m=0,1,...,M-1;n=0,1,...,N-1;For beam (k+1,l+1), the phase of each antenna element is 2π[(k+1)·m / (M·O v )+(l+1)·n / (N·O H At this point, the second reference signal can be configured with five reference signal resources, for example, using the second beam represented by the five lines filled in the diagram. Here, the phase of each antenna element of the second beam corresponding to the five lines filled in the diagram is... Figure 6a The situation shown is similar and will not be repeated here.

[0105] In this embodiment, the first node uses the second beam to send a second reference signal to the second node; the second node measures the second reference signal, obtains a second measurement result, and sends the second measurement result to the first node.

[0106] In some optional embodiments, the second reference signal may be a reference signal such as SSB, CSI-RS, or PRS, or it may be a reference signal specifically used for sensing services; this embodiment does not limit this. Optionally, the second reference signal and the first reference signal may be the same reference signal or different reference signals; this embodiment does not limit this.

[0107] In some alternative embodiments, the second node measures the second reference signal, specifically by measuring RSRP and / or SINR.

[0108] In some optional embodiments of the present invention, before transmitting the second reference signal using the second beam, the method further includes: the first node transmitting second configuration information of the second reference signal to the second node, the second configuration information including: time-domain resource configuration information, frequency-domain resource configuration information, measurement reporting type, number of reported measurement results, and indication information of quasi-co-location type D; the indication information of quasi-co-location type D is used to indicate that the resources of the second reference signal have a quasi-co-location relationship with the resource with the highest reference signal received power in the first measurement results.

[0109] In this embodiment, before the first node sends the second reference signal to the second node, it first sends the second configuration information of the second reference signal to the second node. The second configuration information is used at least for the second node to receive the second reference signal and / or to measure the second reference signal.

[0110] In this embodiment, optionally, the second configuration information may include time-frequency resource configuration information of the second reference signal, such as time-domain resource configuration information and / or frequency-domain resource configuration information. Optionally, the second configuration information may also include the measurement reporting type and / or the number of reported measurement results. For example, the measurement reporting type may include RSRP and / or SINR. Taking RSRP as an example, during the measurement of the second reference signal by the second node, the second reference signal with the highest RSRP value is selected for reporting based on the number of measurement results. The value of K is then the number of measurement results. For example, if the second reference signal has 16 resources, corresponding to 16 beams, the second node measures these 16 resources, but the number of reported measurement results is less than or equal to the number of resources corresponding to the second reference signal. For example, the value of K can be 4, or other integers less than or equal to 16.

[0111] In some optional embodiments, one or more of the time-domain resource configuration information, frequency-domain resource configuration information, measurement reporting type, and number of reported measurement results can also be made known to the second node through a pre-agreed method, that is, one or more of the time-domain resource configuration information, frequency-domain resource configuration information, measurement reporting type, and number of reported measurement results do not need to be configured through the second configuration information.

[0112] In some optional embodiments, when the second node is a terminal, the first node sends second configuration information to the second node, including: the first node sending the second configuration information to the second node via RRC signaling, DCI, or MAC CE. Correspondingly, the first node receives a first measurement result from the second node's measurement of the first reference signal, including: the first node receiving the second measurement result sent by the second node via PUCCH or PUSCH.

[0113] In some alternative embodiments, when the second node is a second base station, the first node sends second configuration information to the second node. Specifically, the first node may send the second configuration information to the second node via Xn interface signaling. Correspondingly, the first node receives the second measurement result of the second node measuring the first reference signal. Specifically, the first node may receive the second measurement result sent by the second node via Xn interface signaling.

[0114] In some optional embodiments, the second configuration information may further include indication information of quasi-co-location type D (QCL-Type D); the indication information of quasi-co-location type D (QCL-Type D) is used to indicate that the resource of the second reference signal has a quasi-co-location relationship with the resource with the highest reference signal receiving power in the first measurement result.

[0115] In this embodiment, the transmission of the second reference signal requires associating the resource of the second reference signal with the resource with the highest RSRP in the first reference signal using the indication information in the second configuration information that the resource of the second reference signal has a quasi-co-addressable relationship with the resource with the highest received power in the first measurement result. Since the receiving beam has already been determined when the second node measures the first reference signal with the highest RSRP during the measurement of the first reference signal, the indication information in the second configuration information that the resource of the second reference signal has a quasi-co-addressable relationship with the resource with the highest received power in the first measurement result enables the second node to use the receiving beam corresponding to the first reference signal with the highest RSRP to receive and measure the second reference signal.

[0116] In some alternative embodiments of the present invention, the method further includes: the first node determining a beam direction for performing a sensing task based on the first measurement result and the second measurement result.

[0117] In this embodiment, the second measurement result can assist the first node in determining a better beam direction. Specifically, the first node can combine the first and second measurement results to determine the beam direction for performing the sensing task, and then perform subsequent sensing tasks based on the determined beam direction.

[0118] Figure 7 This is a schematic diagram illustrating the transmission of the second reference signal in the sensing reference signal configuration method of this invention; as shown. Figure 7 As shown, the first node transmits two second reference signals using the second beams (beams 5 and 6). The second reference signals detect the echo signals arriving at the second node by detecting the reflection / diffraction of the target. The second node uses the receiving beam with the largest measured RSRP value from the first reference signal to perform RSRP measurements on the two second reference signals, obtains the second measurement results, and feeds them back to the first node.

[0119] Based on the above embodiments, this invention also provides a method for configuring a sensing reference signal. Figure 8 This is a flowchart illustrating the sensing reference signal configuration method according to an embodiment of the present invention. Figure 2 ;like Figure 8 As shown, the method includes:

[0120] Step 201: The second node receives the first reference signal transmitted by the first node using multiple first beams, and sends the first measurement result of measuring the first reference signal to the first node;

[0121] Step 202: The second node receives the second reference signal transmitted by the first node using the second beam, and sends a second measurement result of measuring the second reference signal to the first node; the second beam is determined by the first node based on the first measurement result.

[0122] In this embodiment, the first node, as a transmitter, can also be referred to as a transmitter node or transmitter device; correspondingly, the second node, as a receiver, can also be referred to as a receiver node or receiver device. For example, the first node can be a base station, and can be referred to as the first base station; the second node can be a base station or a terminal, and when the second node is a base station, it can be referred to as the second base station.

[0123] In this embodiment, the first node first sends a first reference signal to the second node using multiple first beams; the second node measures the first reference signal, obtains a first measurement result, and sends the first measurement result to the first node.

[0124] In some alternative embodiments, the first reference signal may be a reference signal such as SSB, CSI-RS, PRS, or it may be a reference signal specifically used for sensing services. This embodiment does not limit this.

[0125] In some alternative embodiments, the second node measures the first reference signal, specifically by measuring RSRP and / or SINR.

[0126] In some optional embodiments of the present invention, before the second node receives the first reference signal transmitted by the first node using multiple first beams, the method further includes: the second node receiving first configuration information transmitted by the first node, the first configuration information including: time domain resources, frequency domain resources, measurement reporting type, and the number of reported measurement results.

[0127] In this embodiment, the first configuration information is at least used by the second node to receive the first reference signal and / or to measure the first reference signal. For example, the measurement reporting type may include RSRP and / or SINR. Taking RSRP as an example, during the second node's measurement of the first reference signal, the first reference signal ranked first by RSRP from largest to smallest is selected for reporting based on the number of measurement results. The value of K is then the number of measurement results. For example, if the first reference signal has 16 resources, corresponding to 16 beams, the second node measures these 16 resources, but the number of reported measurement results is less than or equal to the number of resources corresponding to the first reference signal. For example, the value of K can be 4, or other integers less than or equal to 16.

[0128] In some optional embodiments, the first configuration information further includes measurement requirement indication information; wherein, the measurement requirement indication information includes: a first threshold value and indication information on whether to feedback whether the difference in the reference signal received power of the two beams is less than the first threshold value; wherein, the two beams are the two beams whose corresponding reference signal received power is ranked from largest to smallest.

[0129] Accordingly, when the measurement requirement indication information includes indication information on whether the difference between the reference signal received power of the two beams is less than the first threshold value, the first measurement result includes first information indicating whether the difference between the reference signal received power of the two beams is less than the first threshold value.

[0130] In this embodiment, the first configuration information may further include measurement requirement indication information. This indication information includes whether to feed back whether the difference in the received reference signal power of the two beams is less than a first threshold value, and the first threshold value itself. If the measurement requirement indication information includes the indication of whether the difference in the received reference signal power of the two beams is less than the first threshold value, then after the second node completes the measurement, the first measurement result reported also needs to include whether the difference in the RSRP of the two beams ranked from largest to smallest is less than the first threshold value. Correspondingly, if the measurement requirement indication information does not include the indication of whether the difference in the received reference signal power of the two beams is less than the first threshold value, then the first measurement result does not need to include whether the difference in the RSRP of the two beams ranked from largest to smallest is less than the first threshold value.

[0131] In some optional embodiments, when the second node is a terminal, the second node receives the first configuration information sent by the first node, including: the second node receives the first configuration information sent by the first node via RRC, DCI or MAC CE; correspondingly, the second node sends the first measurement result to the first node, including: the second node sends the first measurement result to the first node via PUCCH or PUSCH.

[0132] In some alternative embodiments, when the second node is a base station, the second node receiving the first configuration information sent by the first node includes: the second node receiving the first configuration information sent by the first node via Xn interface signaling. Correspondingly, the second node sending the first measurement result to the first node includes: the second node sending the first measurement result to the first node via Xn interface signaling.

[0133] In this embodiment, the first node uses the second beam to send a second reference signal to the second node; the second node measures the second reference signal, obtains a second measurement result, and sends the second measurement result to the first node.

[0134] In some optional embodiments, the second reference signal may be a reference signal such as SSB, CSI-RS, or PRS, or it may be a reference signal specifically used for sensing services; this embodiment does not limit this. Optionally, the second reference signal and the first reference signal may be the same reference signal or different reference signals; this embodiment does not limit this.

[0135] In some alternative embodiments, the second node measures the second reference signal, specifically by measuring RSRP and / or SINR.

[0136] In some optional embodiments of the present invention, before the second node receives the second reference signal transmitted by the first node using the second beam, the method further includes: the second node receiving second configuration information of the second reference signal transmitted by the first node, the second configuration information including: time domain resources, frequency domain resources, measurement reporting type, number of reported measurement results, and indication information of quasi-co-location type D; the indication information of quasi-co-location type D is used to indicate that the resources of the second reference signal have a quasi-co-location relationship with the resource with the highest reference signal reception power in the first measurement results.

[0137] In this embodiment, optionally, the second configuration information may also include indication information of quasi-co-location type D (QCL-Type D); the indication information of quasi-co-location type D (QCL-Type D) is used to indicate that the resource of the second reference signal has a quasi-co-location relationship with the resource with the highest reference signal receiving power in the first measurement result.

[0138] In some alternative embodiments, the second node receives a second reference signal transmitted by the first node using a second beam, including: the second node receives the second reference signal transmitted by the first node using the receiving beam when the reference signal receiving power in the first measurement result is at its maximum.

[0139] In this embodiment, the transmission of the second reference signal requires associating the resource of the second reference signal with the resource with the highest RSRP in the first reference signal using the indication information in the second configuration information that the resource of the second reference signal has a quasi-co-addressable relationship with the resource with the highest received power in the first measurement result. Since the receiving beam has already been determined when the second node measures the first reference signal with the highest RSRP during the measurement of the first reference signal, the indication information in the second configuration information that the resource of the second reference signal has a quasi-co-addressable relationship with the resource with the highest received power in the first measurement result enables the second node to use the receiving beam corresponding to the first reference signal with the highest RSRP to receive and measure the second reference signal.

[0140] In some optional embodiments, when the second node is a terminal, the second node receives the second configuration information sent by the first node, including: the second node receives the second configuration information sent by the first node via RRC, DCI or MAC CE; correspondingly, the second node sends the second measurement result to the first node, including: the second node sends the first measurement result to the second node via PUCCH or PUSCH.

[0141] In some alternative embodiments, when the second node is a base station, the second node receiving the second configuration information sent by the first node includes: the second node receiving the second configuration information sent by the first node via Xn interface signaling. Correspondingly, the second node sending the second measurement result to the first node includes: the second node sending the second measurement result to the first node via Xn interface signaling.

[0142] The sensing reference signal configuration method of this invention will be described in detail below with reference to specific examples.

[0143] Figure 9 This is a schematic diagram of the interaction flow of the sensing reference signal configuration method according to an embodiment of the present invention; as shown below. Figure 9As shown, the method includes:

[0144] Step 301: The first node sends the first configuration information of the first reference signal to the second node, and sends the first reference signal using the first beam.

[0145] Here, the first node is the sensing transmitting node, and the second node is the sensing receiving node. The first node is configured with 32 SSB resources, each using 32 beams for transmission. Before transmission, the relevant configuration is notified to the second node via RRC signaling and MAC CE.

[0146] Specifically, the first configuration information includes the time-frequency resource configuration of 32 SSB resources, the type of measurement reporting, and the number of reported measurement results. This first configuration information can be communicated to the second node via RRC signaling, and the corresponding information can be activated via MAC CE when sensing signal transmission is required.

[0147] The time-frequency resources of the 32 SSB resources can be determined through the SSB index, the measurement reporting type is RSRP, and the number of reported measurement results is 2. The configuration is then activated via MAC CE.

[0148] In this example, the first configuration information also includes an indication of whether the difference between the RSRPs of the two strongest reference signal resources that the second node needs to feedback is less than a first threshold value, and the first threshold value is set to 1.5dB.

[0149] The beam orientation of the 32 beams used here can be determined using the DFT codebook method, with oversampling factors O in both the vertical and horizontal dimensions. v and O H They are 4 and 2 respectively.

[0150] Step 302: The second node receives and measures the first reference signal according to the first configuration information, and feeds back the first measurement result to the first node.

[0151] Here, the second node performs RSRP measurement on the 32 SSB resources in the first reference signal and feeds back the index and RSRP value of the two SSBs with the strongest RSRP to the first node. The RSRP value of the first (top-1) RSRP resource is reported through the corresponding sequence number of the RSRP value with a step size of 1dBm. The RSRP value of the second (top-2) RSRP resource is reported through a difference value, which represents the difference with the RSRP value of top-1 with a step size of 2dBm. The second node also feeds back whether the difference in RSRP between the two strongest reference signal resources is less than the first threshold value.

[0152] For example, assuming the RSRP value of top-1 is -95.1dBm and the corresponding SSB is SSB#2, and the RSRP of top-2 is -96.4dBm and the corresponding SSB is SSB#3, then the second node reports that top-1 is SSB#2 with an RSRP of -95dBm, top-2 is SSB#3, the differential RSRP is 2dB, and feeds back that the difference in RSRP between the two strongest reference signal resources SSB#2 and SSB#3 is less than the specified threshold value of 1.5dB.

[0153] Step 303: Based on the first measurement result and the direction of the first beam corresponding to each configured first reference signal, the first node determines whether there are two adjacent beams whose RSRPs satisfy the first condition. If the first condition is satisfied, proceed to subsequent steps 304 to 305. If the first condition is not satisfied, there is no need to proceed to subsequent steps 304 to 305, and the subsequent sensing operation is performed normally.

[0154] Here, based on the first measurement result, the first node learns that the two SSB resources with the strongest RSRP are SSB#2 and SSB#3, and the RSRP values ​​of these two SSB resources are less than the set threshold of 1.5dB. Assuming that SSB#2 is transmitted using beam#2 and SSB#3 is transmitted using beam#3, and the beam direction is determined by the DFT codebook to be two horizontally adjacent beams, then the beam direction needs to be adjusted in subsequent steps 304 to 305.

[0155] Step 304: The first node sends the second configuration information of the second reference signal to the second node, and uses the second beam to send the second reference signal.

[0156] In this example, since the two strongest beams of RSRP are horizontally adjacent, the first node can be based on... Figure 6a Configure 7 CSI-RS resources and associate these 7 CSI-RS resources QCL-TypeD with the resource SSB#2 with the largest RSRP value in the first reference signal. This means that the second node can use the receiving beam used when measuring SSB#2 to measure these 7 CSI-RS.

[0157] Here, the first node can configure these 7 CSI-RS resources via RRC signaling, with the measurement reporting type set to RSRP and the number of reported measurement results set to 1. This configuration is then activated via MAC CE.

[0158] Here, the oversampling factor O can be increased. v and O H This allows for beam refinement, generating more DFT codebooks. For example, it involves reducing the oversampling factor O in both the vertical dimension (e.g., the first dimension) and the horizontal dimension (e.g., the second dimension).v and O H By expanding from 4 and 2 to 8 and 4 respectively, multiple new beam directions can be added between the original Beam#2 and Beam#3, such as... Figure 6a As shown, the seven CSI-RS resources mentioned above are transmitted using the second beam represented by the seven circles filled with lines in the figure.

[0159] Step 305: The second node receives and measures the second reference signal according to the second configuration information, and feeds back the second measurement result to the first node.

[0160] Here, according to the instructions of QCL-TypeD, the second node uses the receiving beam when measuring SSB#2 to measure these 7 CSI-RS reference signals. Assuming that the strongest RSRP among these 7 CSI-RS is CSI-RS#5 with an RSRP value of -94dBm, the second node reports CSI-RS#5 with an RSRP of -95dBm.

[0161] The first node can determine the optimal beam as Beam#5 based on the strongest RSRP of -95dBm in the first measurement result, which corresponds to Beam#2, and the strongest RSRP of -94dBm in the second stage, which corresponds to Beam#5.

[0162] Based on the above embodiments, this invention also provides a sensing reference signal configuration device, which is applied to a first node. Figure 10 This is a schematic diagram of the composition of the sensing reference signal configuration device according to an embodiment of the present invention. Figure 1 ;like Figure 10 As shown, the device includes: a first communication unit 11 and a first processing unit 12; wherein,

[0163] The first communication unit 11 is used to send a first reference signal to the second node using multiple first beams, and to receive a first measurement result from the second node measuring the first reference signal.

[0164] The first processing unit 12 is configured to determine a second beam based on the two adjacent first beams when the reference signal received power of two adjacent first beams satisfies a first condition, based on the first measurement result.

[0165] The first communication unit 11 is also configured to transmit a second reference signal using the second beam, and to receive a second measurement result of the second node measuring the second reference signal.

[0166] In some optional embodiments of the present invention, the first communication unit 11 is further configured to send first configuration information of the first reference signal to the second node before sending the first reference signal to the second node using multiple first beams. The first configuration information includes: time domain resource configuration information, frequency domain resource configuration information, measurement reporting type, and number of reported measurement results.

[0167] In some optional embodiments of the present invention, the first configuration information further includes measurement requirement indication information; wherein, the measurement requirement indication information includes: a first threshold value and indication information on whether to feedback whether the difference in the reference signal received power of the two beams is less than the first threshold value; wherein, the two beams are the two beams whose corresponding reference signal received power is ranked from largest to smallest.

[0168] In some optional embodiments of the present invention, the first condition includes: there are two first beams whose corresponding reference signal received power is ranked in descending order and are adjacent beams, and the difference in reference signal received power between the two first beams is less than a first threshold value.

[0169] In some optional embodiments of the present invention, the first communication unit 11 is further configured to send second configuration information of the second reference signal to the second node before transmitting the second reference signal using the second beam. The second configuration information includes: time-domain resource configuration information, frequency-domain resource configuration information, measurement reporting type, number of reported measurement results, and indication information of quasi-co-location type D. The indication information of quasi-co-location type D is used to indicate that the resources of the second reference signal have a quasi-co-location relationship with the resource with the highest reference signal receiving power in the first measurement results.

[0170] In some optional embodiments of the present invention, the first processing unit 12 is used to expand the oversampling factor of the first and second dimensions in beamforming to increase the beam density or reduce the angular spacing between beams; based on the two adjacent first beams, the beam that satisfies a specified range among the multiple beams after the density is increased or the angular spacing is reduced is determined as the second beam.

[0171] In some alternative embodiments of the present invention, the first processing unit 12 is further configured to determine the beam direction for performing the sensing task based on the first measurement result and the second measurement result.

[0172] In this embodiment of the invention, the first processing unit 12 in the device can be implemented by a central processing unit (CPU), a digital signal processor (DSP), a microcontroller unit (MCU), or a field-programmable gate array (FPGA) in practical applications; the first communication unit 11 in the device can be implemented by a communication module (including: basic communication kit, operating system, communication module, standardized interface and protocol, etc.) and a transceiver antenna in practical applications.

[0173] This invention also provides a sensing reference signal configuration device, which is applied to a second node. Figure 11 This is a schematic diagram of the composition of the sensing reference signal configuration device according to an embodiment of the present invention. Figure 2 ;like Figure 11 As shown, the device includes: a second communication unit 21 and a second processing unit 22; wherein,

[0174] The second communication unit 21 is configured to receive a first reference signal transmitted by the first node using a plurality of first beams; and is also configured to receive a second reference signal transmitted by the first node using a second beam, wherein the second beam is determined by the first node based on the first measurement result;

[0175] The second processing unit 22 is configured to measure the first reference signal to obtain a first measurement result; and to measure the second reference signal to obtain a second measurement result.

[0176] The second communication unit 21 is also configured to send the first measurement result to the first node; and to send the second measurement result to the first node.

[0177] In some optional embodiments of the present invention, the second communication unit 21 is further configured to receive first configuration information sent by the first node before receiving the first reference signal sent by the first node using multiple first beams. The first configuration information includes: time domain resources, frequency domain resources, measurement reporting type, and the number of reported measurement results.

[0178] In some optional embodiments of the present invention, the first configuration information further includes measurement requirement indication information; wherein, the measurement requirement indication information includes: a first threshold value and indication information on whether to feedback whether the difference in the reference signal received power of the two beams is less than the first threshold value; wherein, the two beams are the two beams whose corresponding reference signal received power is ranked from largest to smallest.

[0179] Accordingly, when the measurement requirement indication information includes indication information on whether the difference between the reference signal received power of the two beams is less than the first threshold value, the first measurement result includes first information indicating whether the difference between the reference signal received power of the two beams is less than the first threshold value.

[0180] In some optional embodiments of the present invention, the second communication unit 21 is further configured to receive second configuration information of the second reference signal sent by the first node before receiving the second reference signal sent by the first node using the second beam. The second configuration information includes: time domain resources, frequency domain resources, measurement reporting type, number of reported measurement results, and indication information of quasi-co-location type D. The indication information of quasi-co-location type D is used to indicate that the resources of the second reference signal have a quasi-co-location relationship with the resource with the highest reference signal reception power in the first measurement results.

[0181] In some optional embodiments of the present invention, the second communication unit 21 is used to receive the second reference signal sent by the first node using the beam with the highest reference signal receiving power in the first measurement result.

[0182] In this embodiment of the invention, the second processing unit 22 in the device can be implemented by a CPU, DSP, MCU or FPGA in practical applications; the second communication unit 21 in the device can be implemented by a communication module (including: basic communication kit, operating system, communication module, standardized interface and protocol, etc.) and transceiver antenna in practical applications.

[0183] It should be noted that the sensing reference signal configuration device provided in the above embodiments is only illustrated by the division of the above-described program modules when configuring the sensing reference signal. In practical applications, the above processing can be assigned to different program modules as needed, that is, the internal structure of the device can be divided into different program modules to complete all or part of the processing described above. In addition, the sensing reference signal configuration device and the sensing reference signal configuration method embodiments provided in the above embodiments belong to the same concept, and their specific implementation process can be found in the method embodiments, which will not be repeated here.

[0184] This invention also provides a communication node, which is either a first node or a second node. Figure 12 This is a schematic diagram of the hardware composition structure of the communication node according to an embodiment of the present invention, as shown below. Figure 12 As shown, the communication device includes a memory 32, a processor 31, and a computer program stored in the memory 32 and executable on the processor 31. When the processor 31 executes the program, it implements the steps of the sensing reference signal configuration method of the present invention applied to the first node or the second node.

[0185] Optionally, the communication node may also include at least one network interface 33. The various components within the communication node are coupled together via a bus system 34. It is understood that the bus system 34 is used to implement communication between these components. In addition to a data bus, the bus system 34 also includes a power bus, a control bus, and a status signal bus. However, for clarity, in… Figure 12 The general labeled all buses as Bus System 34.

[0186] It is understood that memory 32 can be volatile memory or non-volatile memory, or both. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), magnetic random access memory (FRAM), flash memory, magnetic surface memory, optical disc, or compact disc read-only memory (CD-ROM); magnetic surface memory can be disk storage or magnetic tape storage. Volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Synchronous Static Random Access Memory (SSRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), SyncLink Dynamic Random Access Memory (SLDRAM), and Direct Rambus Random Access Memory (DRRAM).The memory 32 described in the embodiments of the present invention is intended to include, but is not limited to, these and any other suitable types of memory.

[0187] The methods disclosed in the above embodiments of the present invention can be applied to or implemented by processor 31. Processor 31 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware in processor 31 or by instructions in software form. The processor 31 may be a general-purpose processor, DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. Processor 31 can implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present invention. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the methods disclosed in the embodiments of the present invention can be directly manifested as being executed by a hardware decoding processor, or being executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium, which is located in memory 32. Processor 31 reads the information in memory 32 and completes the steps of the aforementioned method in combination with its hardware.

[0188] In an exemplary embodiment, the communication node may be implemented by one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), FPGAs, general-purpose processors, controllers, MCUs, microprocessors, or other electronic components to perform the aforementioned method.

[0189] In an exemplary embodiment, the present invention also provides a computer-readable storage medium, such as a memory 32 including a computer program, which can be executed by a processor 31 of a communication node to perform the steps described in the foregoing method. The computer-readable storage medium may be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM; or it may be various devices including one or any combination of the above-mentioned memories.

[0190] The computer-readable storage medium provided in the embodiments of the present invention stores a computer program thereon, which, when executed by a processor, implements the steps of the sensing reference signal configuration method applied to a first node or a second node according to the embodiments of the present invention.

[0191] This application also provides a computer program product, including a computer program that can be executed by a communication node (such as the processor 31 of the communication node) to complete the steps of any of the aforementioned sensing reference signal configuration methods.

[0192] The methods disclosed in the several method embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments.

[0193] The features disclosed in the several product embodiments provided in this application can be arbitrarily combined without conflict to obtain new product embodiments.

[0194] The features disclosed in the several method or device embodiments provided in this application can be arbitrarily combined without conflict to obtain new method or device embodiments.

[0195] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods, such as: multiple units or components can be combined, or integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be electrical, mechanical, or other forms.

[0196] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to achieve the purpose of this embodiment according to actual needs.

[0197] In addition, in the various embodiments of the present invention, each functional unit can be integrated into one processing unit, or each unit can be a separate unit, or two or more units can be integrated into one unit; the integrated unit can be implemented in hardware or in the form of hardware plus software functional units.

[0198] Those skilled in the art will understand that all or part of the steps of the above method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps of the above method embodiments. The aforementioned storage medium includes various media that can store program code, such as mobile storage devices, ROM, RAM, magnetic disks, or optical disks.

[0199] Alternatively, if the integrated units of this invention are implemented as software functional modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of this invention, or the parts that contribute to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as mobile storage devices, ROM, RAM, magnetic disks, or optical disks.

[0200] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for configuring a sensing reference signal, characterized in that, The method is applied to the first node, and the method includes: The first node transmits a first reference signal to the second node using multiple first beams, and receives a first measurement result from the second node measuring the first reference signal; Based on the first measurement result, when the first node determines that there are two adjacent first beams whose reference signal reception power satisfies the first condition, it determines a second beam based on the two adjacent first beams, transmits a second reference signal using the second beam, and receives a second measurement result from the second node measuring the second reference signal.

2. The method according to claim 1, characterized in that, Before the first node transmits a first reference signal to the second node using multiple first beams, the method further includes: The first node sends the first configuration information of the first reference signal to the second node. The first configuration information includes: time domain resource configuration information, frequency domain resource configuration information, measurement reporting type, and the number of reported measurement results.

3. The method according to claim 2, characterized in that, The first configuration information also includes measurement requirement indication information; The measurement requirement indication information includes: a first threshold value and an indication of whether the difference in the received power of the reference signals of the two beams is less than the first threshold value; wherein, the two beams are the two beams whose corresponding received power is ranked from largest to smallest.

4. The method according to claim 1, characterized in that, The first condition includes: there are two first beams whose corresponding reference signal received power is ranked in descending order and are adjacent beams, and the difference between the reference signal received power of the two first beams is less than a first threshold value.

5. The method according to claim 1, characterized in that, Before transmitting the second reference signal using the second beam, the method further includes: The first node sends the second configuration information of the second reference signal to the second node. The second configuration information includes: time domain resource configuration information, frequency domain resource configuration information, measurement reporting type, number of reported measurement results, and indication information of quasi-co-location type D. The indication information of quasi-co-location type D is used to indicate that the resources of the second reference signal have a quasi-co-location relationship with the resource with the highest reference signal received power in the first measurement results.

6. The method according to claim 1, characterized in that, The determination of the second beam based on the two adjacent first beams includes: Increase the oversampling factor of the first and second dimensions in beamforming to increase beam density or reduce the angular spacing between beams; Based on the two adjacent first beams, the beam that satisfies the specified range among the multiple beams after the density is increased or the angular interval is reduced is determined as the second beam.

7. The method according to claim 1, characterized in that, The method further includes: The first node determines the beam direction for performing the sensing task based on the first measurement result and the second measurement result.

8. A method for configuring a sensing reference signal, characterized in that, The method is applied to the second node, and the method includes: The second node receives a first reference signal transmitted by the first node using multiple first beams, and sends a first measurement result to the first node measuring the first reference signal; The second node receives a second reference signal transmitted by the first node using a second beam, and sends a second measurement result of measuring the second reference signal to the first node; the second beam is determined by the first node based on the first measurement result.

9. The method according to claim 8, characterized in that, Before the second node receives the first reference signal transmitted by the first node using multiple first beams, the method further includes: The second node receives the first configuration information sent by the first node. The first configuration information includes: time domain resources, frequency domain resources, measurement reporting type, and the number of reported measurement results.

10. The method according to claim 9, characterized in that, The first configuration information also includes measurement requirement indication information; The measurement requirement indication information includes: a first threshold value and an indication information on whether the difference between the reference signal received power of the two beams is less than the first threshold value; wherein, the two beams are the two beams whose corresponding reference signal received power is ranked from largest to smallest. Accordingly, when the measurement requirement indication information includes indication information on whether the difference between the reference signal received power of the two beams is less than the first threshold value, the first measurement result includes first information indicating whether the difference between the reference signal received power of the two beams is less than the first threshold value.

11. The method according to claim 8, characterized in that, Before the second node receives the second reference signal transmitted by the first node using the second beam, the method further includes: The second node receives the second configuration information of the second reference signal sent by the first node. The second configuration information includes: time domain resources, frequency domain resources, measurement reporting type, number of reported measurement results, and indication information of quasi-co-location type D. The indication information of quasi-co-location type D is used to indicate that the resources of the second reference signal have a quasi-co-location relationship with the resource with the highest reference signal receiving power in the first measurement results.

12. The method according to claim 11, characterized in that, The second node receives a second reference signal transmitted by the first node using a second beam, including: The second node receives the second reference signal sent by the first node using the receiving beam at which the reference signal receiving power is at its maximum in the first measurement result.

13. A sensing reference signal configuration device, characterized in that, The device is applied to a first node, and the device includes: a first communication unit and a first processing unit; wherein... The first communication unit is configured to transmit a first reference signal to the second node using multiple first beams, and to receive a first measurement result from the second node measuring the first reference signal. The first processing unit is configured to determine a second beam based on the two adjacent first beams when the reference signal received power of two adjacent first beams satisfies a first condition, based on the first measurement result. The first communication unit is further configured to transmit a second reference signal using the second beam, and to receive a second measurement result from the second node measuring the second reference signal.

14. A sensing reference signal configuration device, characterized in that, The device is applied to a second node, and the device includes: a second communication unit and a second processing unit; wherein... The second communication unit is configured to receive a first reference signal transmitted by the first node using a plurality of first beams; and is also configured to receive a second reference signal transmitted by the first node using a second beam, wherein the second beam is determined by the first node based on the first measurement result; The second processing unit is configured to measure the first reference signal to obtain a first measurement result; and to measure the second reference signal to obtain a second measurement result. The second communication unit is further configured to send the first measurement result to the first node; and to send the second measurement result to the first node.

15. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 7; or, when the program is executed by a processor, it implements the steps of the method according to any one of claims 8 to 12.

16. A communication node, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the steps of the method according to any one of claims 1 to 7; or, when the processor executes the program, it implements the steps of the method according to any one of claims 8 to 12.

17. A computer program product, characterized in that, It includes computer program instructions that cause a computer to perform the steps of the method according to any one of claims 1 to 7; or, the computer program instructions cause a computer to perform the steps of the method according to any one of claims 8 to 12.

Images